论文标题
强子冲突的部门淋浴
Sector Showers for Hadron Collisions
论文作者
论文摘要
在常规的Parton阵雨（包括基于偶极/天线的阵雨）中，给定的$（\ Mathrm {Born}+M）$ - 通常可以通过$ {\ Mathcal O}（M！）$不同的“淋浴历史”来达到Parton配置。在矩阵元素校正和合并程序的背景下，考虑这些历史的授权授权相当复杂和资源密集型算法。到目前为止，在淋浴环境中的一个很少的替代方案是将分支相位空间分为不同的“扇区”，每个扇区仅收到单个分支内核的贡献。这有许多后果，包括制作淋浴操作员行李；即，每个Parton配置现在都有一个独特的“ iNverse”。作为开发基于此类阵雨的成熟矩阵元素校正和合并程序的第一步，我们在这里将天线淋浴的扇形方法扩展到强子 - 戴隆碰撞，包括质量和螺旋性依赖性。
In conventional parton showers (including ones based on dipoles/antennae), a given $(\mathrm{Born}+m)$-parton configuration can typically be reached via ${\mathcal O}(m!)$ different "shower histories". In the context of matrix-element-correction and merging procedures, accounting for these histories mandates fairly complex and resource-intensive algorithms. A so far little-explored alternative in the shower context is to divide the branching phase spaces into distinct "sectors", each of which only receives contributions from a single branching kernel. This has a number of consequences including making the shower operator bijective; i.e., each parton configuration now has a single unique "inverse". As a first step towards developing a full-fledged matrix-element-correction and merging procedure based on such showers, we here extend the sector approach for antenna showers to hadron-hadron collisions, including mass and helicity dependence.
